i guest its 100ZX job to cover the back courtI still feel that smash power of LDF is superior to 100zz but I am getting used to it. For mixed doubles where I spend most time backcourt in attacking formation or for doubles where I am paired with stronger frontcourt partner I will continue to use LDF in 4U or even 3U version. For everything else in doubles 100zz will most likely be my choice.

But instead, why did Yonex makes it less premium. Why dont they use the same Black Micro thing material, the same as 100ZZ with different BP or at least use the same old premium material like Nanometric so ZX will be in par with ZZ.
If so, it will be new twins like 88D/88S. Front & back court combo. Or maybe they aim for single as targeted market, so they purposely kill ZX.